Do not allow recursive RFC3173 IPComp payload.
Do not allow recursive RFC3173 IPComp payload.

Reviewed by:	Tavis Ormandy (taviso cmpxchg8b.com)
MFC after:	5 days
Security:	CVE-2011-1547

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase